65805683697 has 12 divisors (see below), whose sum is σ = 102364397044. Its totient is φ = 40495805280.

The previous prime is 65805683683. The next prime is 65805683711. The reversal of 65805683697 is 79638650856.

65805683697 is a `hidden beast` number, since 6 + 5 + 8 + 0 + 568 + 3 + 69 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (65805683683) and next prime (65805683711).

It can be written as a sum of positive squares in 2 ways, for example, as 4061385441 + 61744298256 = 63729^2 + 248484^2 .

It is not a de Polignac number, because 65805683697 - 2⁸ = 65805683441 is a prime.

It is a super-2 number, since 2×65805683697² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65805685697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281220754 + ... + 281220987.

Almost surely, 2^65805683697 is an apocalyptic number.

It is an amenable number.

65805683697 is a deficient number, since it is larger than the sum of its proper divisors (36558713347).

65805683697 is a wasteful number, since it uses less digits than its factorization.

65805683697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562441760 (or 562441757 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 65805683697 in words is "sixty-five billion, eight hundred five million, six hundred eighty-three thousand, six hundred ninety-seven".